Overriding oldest item in the collection

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1

Hey,
I’m building an announcement feed that will display important notes on the page.
I’m using this example for dynamic content from a collection:
https://www.wix.com/corvid/example/dynamic-slideshow

However as there is no option to add more slides dynamically, I want to limit the collection size to 6 and on each item added to the collection to remove the oldest item.

What is the best way to approach this problem?

2

Hi Edward,

You could query on the hidden field called _createdDate in ascending order. That would be a way to isolate the oldest item. Then, issue the remove command.

wixData.query("announcements")
.ascending("_createdDate")
.limit(1)
.find()
.then( (results) => {
    if (results.items.length > 0) {
        console.log(results);
        let item = results.items[0];
        wixData.remove("announcements",item._id)
        .then((result) => {
            console.log(result);
        })
    }
} );
3

@edwardfrogz You could call it in the Before Insert hook.